The cardinal's hat, at one time an article of attire, is now only a symbol. It is of red cloth with a wide brim and shallow crown, and on either side hang fifteen red tassels, the number denoting the ecclesiastical rank of the wearer. From the day of its presentation the hat is put by until its owner's death, when it is brought out once more to be hung up in some side chapel of his titular church, where it remains until it falls to pieces with age. One of the first duties of a new cardinal is to take possession of his titular church, and in old days this was another occasion for pomp and display, and the Pope's guards attended in full dress uniform. Now the cardinal drives quietly in his sombre closed carriage. At the church door he is divested of his cloth cloak and hat, and in flowing scarlet silk he walks up the nave bestowing benedictions on all sides. He seats himself on his throne in the chancel and the vicar of the parish reads to him an address in Latin to which he replies, he is then saluted by all the clergy of the parish in the order of their precedence ending with the acolytes, and the "taking possession" is over. He must however present the church with his portrait painted in oils which is hung with that of the reigning pope in the nave; and with a large escutcheon of his heraldic coat, emblazoned in colour and surmounted by the red hat and tassels, which is placed over the main entrance to the building, and which side by side with the papal arms is the outward and visible sign of a titular church. As princes of the Church, cardinals enjoy the princely distinction of displaying their coats of arms in the halls of their houses, affixed to the wall and sheltered beneath a silken canopy. Further they must have a throne and throne room, but unlike the secular princes of Rome who are entitled to the same privilege, their thrones are turned towards the wall, and are only reversed during a vacancy of the Holy See, when they may be used by their owners, who, for the time, become sovereigns and rulers of the Church.